A method for preparing a multilayer graphene network comprising: (a) providing a reaction chamber; (b) adding nickel metal particles having non-uniform par­ ticle sizes of from about 1 µm to about 200 µm to the reaction chamber, wherein the nickel particles are selected so as to produce a curved catalyst template; (c) pressurizing the reaction chamber to a pressure of from about 40 mTorr to about 150 mTorr; (d) heating the pressurized reaction chamber according to a predeterminedprogramtoformthecurvedmetalcatalyst template from the metal particles; B₁ (e)feedingahydrocarbonsourceintothereactionchamber; (f) allowing the hydrocarbon source to deposit on the metal catalyst template to form a graphene-metal template, wherein the graphene forms as a plurality of graphene sheets arranged in a three-dimensional (3D) network having an incommensurate stacking structure; (g) allowing the reaction chamber and the graphene-metal template to cool to a predetermined temperature while maintaining a pressure of from about 40 mTorr to about 150 mTorr; (h) removing the metal from the graphene-metal template to obtain a graphene network with incommensurate stacking; and (i) collecting the graphene network, wherein a carrier gas selected from Ar, He, H2, N2, and mixtures thereof flows through the reaction chamber while the metal template is formed or while the gra­ phene-metal template is formed or while the metal tem­ plate and the graphene-metal template are formed.

A method for preparing a multilayer graphene network comprising: (a) providing a reaction chamber; (b) adding metal particles having non-uniform particle sizes of from about 1 µm to about 200 µm to the reaction chamber; (c)allowingacarriergastoflowthroughthereactioncham­ ber at a rate of from about 10 sccm to about 1000 sccm and make contact with the metal particles; (d) pressurizing the reaction chamber to a pressure of from about 45 mTorr to about 55 mTorr while the carrier gas is flowing through the chamber; (e) heating the pressurized reaction chamber a temperature offromabout1025°C.toabout1050°C.toformacurved metal catalyst template from the metal particles; (f) feeding a hydrocarbon source into the pressurized reac­ tion chamber while continuing the carrier gas flow; (g) allowing thehydrocarbon source todeposit onthemetal catalyst template to form a graphene-metal template, wherein the graphene forms as a plurality of graphene sheets arranged in a three-dimensional (3D) network having an incommensurate stacking structure; (h) allowing the reaction chamber and the graphene-metal template tocool toafinal temperature ofabout25° C.at a cooling rate of 100° C./min while continuing the carrier gasflowandwhileholdingthereactionchamberpressure at 45 mTorr to 55 mTorr; (i)removing themetal fromthegraphene-metal template to obtain a graphene network with incommensurate stacking; (j) washing the graphene network; (k) drying the graphene network by covering the graphene network with high purity liquid CO₂ at a pressure of 800 psi (±5%) and heating the reaction chamber to 15 16 about 40° C. while increasing the pressure to about 1200 psi, and then allowing the chamber to cool to about 25° C. and allowing the pressure to drop to about 400 psi; and (l) collecting the graphene network.

A method for preparing a multilayer graphene network comprising: (a) providing a reaction chamber; (b) adding nickel metal particles having non-uniform par­ ticle sizes of from about 1 µm to about 200 µm to the reaction chamber, wherein the nickel particles are selected so as to produce a curved catalyst template; (c) pressurizing the reaction chamber to a pressure of from about 40 mTorr to about 150 mTorr; (d) heating the pressurized reaction chamber according to a predeterminedprogramtoformthecurvedmetalcatalyst template from the metal particles; B₁ (e)feedingahydrocarbonsourceintothereactionchamber; (f) allowing the hydrocarbon source to deposit on the metal catalyst template to form a graphene-metal template, wherein the graphene forms as a plurality of graphene sheets arranged in a three-dimensional (3D) network having an incommensurate stacking structure; (g) allowing the reaction chamber and the graphene-metal template to cool to a predetermined temperature while maintaining a pressure of from about 40 mTorr to about 150 mTorr; (h) removing the metal from the graphene-metal template to obtain a graphene network with incommensurate stacking; and (i) collecting the graphene network, wherein a carrier gas selected from Ar, He, H2, N2, and mixtures thereof flows through the reaction chamber while the metal template is formed or while the gra­ phene-metal template is formed or while the metal tem­ plate and the graphene-metal template are formed.

A method for preparing a multilayer graphene network comprising: (a) providing a reaction chamber; (b) adding metal particles having non-uniform particle sizes of from about 1 µm to about 200 µm to the reaction chamber; (c)allowingacarriergastoflowthroughthereactioncham­ ber at a rate of from about 10 sccm to about 1000 sccm and make contact with the metal particles; (d) pressurizing the reaction chamber to a pressure of from about 45 mTorr to about 55 mTorr while the carrier gas is flowing through the chamber; (e) heating the pressurized reaction chamber a temperature offromabout1025°C.toabout1050°C.toformacurved metal catalyst template from the metal particles; (f) feeding a hydrocarbon source into the pressurized reac­ tion chamber while continuing the carrier gas flow; (g) allowing thehydrocarbon source todeposit onthemetal catalyst template to form a graphene-metal template, wherein the graphene forms as a plurality of graphene sheets arranged in a three-dimensional (3D) network having an incommensurate stacking structure; (h) allowing the reaction chamber and the graphene-metal template tocool toafinal temperature ofabout25° C.at a cooling rate of 100° C./min while continuing the carrier gasflowandwhileholdingthereactionchamberpressure at 45 mTorr to 55 mTorr; (i)removing themetal fromthegraphene-metal template to obtain a graphene network with incommensurate stacking; (j) washing the graphene network; (k) drying the graphene network by covering the graphene network with high purity liquid CO₂ at a pressure of 800 psi (±5%) and heating the reaction chamber to 15 16 about 40° C. while increasing the pressure to about 1200 psi, and then allowing the chamber to cool to about 25° C. and allowing the pressure to drop to about 400 psi; and (l) collecting the graphene network.

A method for preparing a multilayer graphene network comprising: (a) providing a reaction chamber; (b) adding nickel metal particles having non-uniform par­ ticle sizes of from about 1 µm to about 200 µm to the reaction chamber, wherein the nickel particles are selected so as to produce a curved catalyst template; (c) pressurizing the reaction chamber to a pressure of from about 40 mTorr to about 150 mTorr; (d) heating the pressurized reaction chamber according to a predeterminedprogramtoformthecurvedmetalcatalyst template from the metal particles; B₁ (e)feedingahydrocarbonsourceintothereactionchamber; (f) allowing the hydrocarbon source to deposit on the metal catalyst template to form a graphene-metal template, wherein the graphene forms as a plurality of graphene sheets arranged in a three-dimensional (3D) network having an incommensurate stacking structure; (g) allowing the reaction chamber and the graphene-metal template to cool to a predetermined temperature while maintaining a pressure of from about 40 mTorr to about 150 mTorr; (h) removing the metal from the graphene-metal template to obtain a graphene network with incommensurate stacking; and (i) collecting the graphene network, wherein a carrier gas selected from Ar, He, H2, N2, and mixtures thereof flows through the reaction chamber while the metal template is formed or while the gra­ phene-metal template is formed or while the metal tem­ plate and the graphene-metal template are formed.

A method for preparing a multilayer graphene network comprising: (a) providing a reaction chamber; (b) adding metal particles having non-uniform particle sizes of from about 1 µm to about 200 µm to the reaction chamber; (c)allowingacarriergastoflowthroughthereactioncham­ ber at a rate of from about 10 sccm to about 1000 sccm and make contact with the metal particles; (d) pressurizing the reaction chamber to a pressure of from about 45 mTorr to about 55 mTorr while the carrier gas is flowing through the chamber; (e) heating the pressurized reaction chamber a temperature offromabout1025°C.toabout1050°C.toformacurved metal catalyst template from the metal particles; (f) feeding a hydrocarbon source into the pressurized reac­ tion chamber while continuing the carrier gas flow; (g) allowing thehydrocarbon source todeposit onthemetal catalyst template to form a graphene-metal template, wherein the graphene forms as a plurality of graphene sheets arranged in a three-dimensional (3D) network having an incommensurate stacking structure; (h) allowing the reaction chamber and the graphene-metal template tocool toafinal temperature ofabout25° C.at a cooling rate of 100° C./min while continuing the carrier gasflowandwhileholdingthereactionchamberpressure at 45 mTorr to 55 mTorr; (i)removing themetal fromthegraphene-metal template to obtain a graphene network with incommensurate stacking; (j) washing the graphene network; (k) drying the graphene network by covering the graphene network with high purity liquid CO₂ at a pressure of 800 psi (±5%) and heating the reaction chamber to 15 16 about 40° C. while increasing the pressure to about 1200 psi, and then allowing the chamber to cool to about 25° C. and allowing the pressure to drop to about 400 psi; and (l) collecting the graphene network.

A method for preparing a multilayer graphene network comprising: (a) providing a reaction chamber; (b) adding nickel metal particles having non-uniform par­ ticle sizes of from about 1 µm to about 200 µm to the reaction chamber, wherein the nickel particles are selected so as to produce a curved catalyst template; (c) pressurizing the reaction chamber to a pressure of from about 40 mTorr to about 150 mTorr; (d) heating the pressurized reaction chamber according to a predeterminedprogramtoformthecurvedmetalcatalyst template from the metal particles; B₁ (e)feedingahydrocarbonsourceintothereactionchamber; (f) allowing the hydrocarbon source to deposit on the metal catalyst template to form a graphene-metal template, wherein the graphene forms as a plurality of graphene sheets arranged in a three-dimensional (3D) network having an incommensurate stacking structure; (g) allowing the reaction chamber and the graphene-metal template to cool to a predetermined temperature while maintaining a pressure of from about 40 mTorr to about 150 mTorr; (h) removing the metal from the graphene-metal template to obtain a graphene network with incommensurate stacking; and (i) collecting the graphene network, wherein a carrier gas selected from Ar, He, H2, N2, and mixtures thereof flows through the reaction chamber while the metal template is formed or while the gra­ phene-metal template is formed or while the metal tem­ plate and the graphene-metal template are formed.

A method for preparing a multilayer graphene network comprising: (a) providing a reaction chamber; (b) adding metal particles having non-uniform particle sizes of from about 1 µm to about 200 µm to the reaction chamber; (c)allowingacarriergastoflowthroughthereactioncham­ ber at a rate of from about 10 sccm to about 1000 sccm and make contact with the metal particles; (d) pressurizing the reaction chamber to a pressure of from about 45 mTorr to about 55 mTorr while the carrier gas is flowing through the chamber; (e) heating the pressurized reaction chamber a temperature offromabout1025°C.toabout1050°C.toformacurved metal catalyst template from the metal particles; (f) feeding a hydrocarbon source into the pressurized reac­ tion chamber while continuing the carrier gas flow; (g) allowing thehydrocarbon source todeposit onthemetal catalyst template to form a graphene-metal template, wherein the graphene forms as a plurality of graphene sheets arranged in a three-dimensional (3D) network having an incommensurate stacking structure; (h) allowing the reaction chamber and the graphene-metal template tocool toafinal temperature ofabout25° C.at a cooling rate of 100° C./min while continuing the carrier gasflowandwhileholdingthereactionchamberpressure at 45 mTorr to 55 mTorr; (i)removing themetal fromthegraphene-metal template to obtain a graphene network with incommensurate stacking; (j) washing the graphene network; (k) drying the graphene network by covering the graphene network with high purity liquid CO₂ at a pressure of 800 psi (±5%) and heating the reaction chamber to 15 16 about 40° C. while increasing the pressure to about 1200 psi, and then allowing the chamber to cool to about 25° C. and allowing the pressure to drop to about 400 psi; and (l) collecting the graphene network.